IA District 4
Iowa · 4 Counties · Ames, Council Bluffs, Sioux City
civdotiq.org
Federal Representatives
Chuck Grassley
Republican · U.S. Senator
Phone: 202-224-3744
Web: https://www.grassley.senate.gov
Office: 135 Hart Senate Office Building Washington DC 20510
Joni Ernst
Republican · U.S. Senator
Phone: 202-224-3254
Web: https://www.ernst.senate.gov
Office: 260 Russell Senate Office Building Washington DC 20510
Randy Feenstra
Republican · U.S. Representative
Phone: 202-225-4426
Web: https://feenstra.house.gov
Office: 2434 Rayburn House Office Building Washington DC 20515-1504
Key Demographics
798,043
Population
$73K
Median Income
39
Median Age
| Metric | Value |
|---|---|
| Bachelor's Degree or Higher | 18.2% |
| Poverty Rate | 11.6% |
| Urban Population | 55% |
| Diversity Index | 28.3 |
| Land Area | 21,433 sq mi |
Federal Spending
$6.3M
Total Annual
51
Contracts & Grants
$39.6M
Infrastructure
| Project | Agency | Amount |
|---|---|---|
| IOWA STATE UNIVERSITY OF SCIENCE AND TECHNOLOGY | Department of Energy | $1.2B |
| DEAN SNYDER CONSTRUCTION CO. | Department of Agriculture | $32.9M |
| ODLE MANAGEMENT GROUP, L.L.C. | Department of Labor | $26.3M |
| AR6 CONSTRUCTION & ENGINEERING, LLC | Department of Agriculture | $6.7M |
| ODLE MANAGEMENT GROUP, L.L.C. | Department of Labor | $5.1M |
Statewide Context
674,521
Iowa Medicaid & CHIP (Jun 2026)
168,367
Iowa Veteran Population (FY2026)
Statewide totals, not specific to this district — these federal programs report only at the state level. Sources: CMS (data.medicaid.gov), VA NCVAS (datahub.va.gov).
Geography
| Counties (4) | Major Cities |
|---|---|
| Story, Pottawattamie, Woodbury, Webster | Ames, Council Bluffs, Sioux City |